C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.

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Drawing multiple polygons with vertex buffer object

I tried to create program in which I would draw multiplepoygons here is fragment of what I have done: GLuint VertexArrayID; exampleof drawing triangle(I have more polygons, like circle, and so on..)...
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22 views

Updating aiScene in ASSIMP with skeleton data

I am working on a project where I take an unrigged closed mesh, import it using ASSIMP, auto-rig it using the algorithm provided by Ilya Baran and Jovan Popovic and again export it using ASSIMP. I ...
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34 views

Custom Scene Component Do Not Register Children

I have made a class that is derived from USceneComponent which contains 4 references for itself and two UStaticMeshComponents. Simply I am trying to make a tree structure. When I first create actor (...
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52 views

Adjust the Camera Viewport Rect in Unreal Engine

Am new to Unreal Engine. I want to adjust the Camera Viewport Rect so that the camera will render to half of the screen. This is achieved in Unity by changing the Camera Viewport Rect property. How ...
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41 views

Cell height with heightmap for collision detection

Hello everyone I'm programming a game with c++ and openGL. My world is generated from a heightmap (100x100 matrix with values 0-255) and now I need a function that returns the actual height based on ...
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28 views

Cannot obtain correct bone transform matrix data

I tried to obtain bone transform matrix for animation implemented with Directx11 and FBX sdk. I found this function in some web resources: fbxCluster->GetLink()->EvaluateGlobalTransform(); // ...
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78 views

2d grid vision(eye sensor) for a neural network bot?

I have a 2d grid and neural network bots living above it. What is a good way to give them vision of tiles in front of them? Below I describe my idea that I don't know how to efficiently(or ...
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126 views

Loading FBX Files into a DirectX 9 Application

I'm having an extremely difficult time trying to convert an FBX file into a format that can be used with DirectX. I've read a lot of articles on forums all over the internet and have followed ...
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107 views

Using linestrip and geomtry shader for a ribbon trail effect? Problem with vertex orders

I'm using DirectX 11 and c++ and I've been trying to make a ribbon trail renderer. I was hoping to be able to not have to build every vertex on the CPU side, just keeping the, uuh, "keyframes", or ...
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43 views

A reference to a Blueprint Game Mode

I am new to Unreal Engine with a very basic knowledge of working with the blueprints and code together. I am having trouble with making a reference of my Blueprint Game Mode in the code. The question ...
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59 views

Implementing Separating Axis Theorem in 3D with C++/OpenGL

Using an Octree data structure provided to me by an acquaintance that gives min/max bounding box values, I've been able to write an algorithm that takes the global centre points, face normals and half ...
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36 views

Direct3D11: Directional Shadow Maps

I've recently implemented shadow maps on my project. However, I'd like to add a feature that allows the light direction to be dynamically changed, so that the terrain can be viewed using different ...
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48 views

State machines and map transitions

I've implemented a [basic] FSM in my game and it currently does its job very well. Recently I have come across a "problem" that I need to show a "Loading map. Please wait..." screen for as long the ...
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132 views

OpenGL RayCasting and Intersection with plane

I have been trying for a couple of days to raycast. I have a Renderable/Texture/Primitive/Whatever placed in the WORLD at 0.0f,0.0f,0.0f, and when I click the mouse I want to know at what X,Y ...
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250 views

Restart a 2D game - OpenGL, GLUT

I started learning OpenGL and GLUT by making a snake game. The problem I encountered is that when I press the "new game" in the menu, the window has to be resized so that the content of the window to ...
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18 views

How can i apply texture to cylinders created using Ogre Procedural Geometry Library?

I am using Procedural::CatmullRomSpline3 to create cylinders between 3 control points, now instead of solid cylinders i need to create dashed/ dotted cylinders so is there a direct way to do so or ...
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54 views

Application is crashing with Ogre::ItemIdentityException

I am new to OGRE and i am trying to create a 3D line using following tutorial: http://www.ogre3d.org/tikiwiki/Line+3D and application is crashing with following exception Ogre::ItemIdentityException.
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205 views

What LuaJit threading archietecture should I use?

I am in the process of designing my own Game Engine for use in a real time CRPG - think Baulder's Gate. I know most of my specifications right now, and I am currently in a planning phase. I chose Lua ...
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147 views

How is curved 2d ground is implemented in real games?

I'm developing a 2d platformer (inspired by N game) and I already successfully implemented circle-convex, convex-convex and circle-circle collision. But now I want to be able to make platform that ...
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51 views

What is a simple way to pull input from a keyboard and attach it to a std::string?

The question says it all to be honest. I have a game that I am making in Ogre3D, using OIS as the main input library. My issue is that I am attempting to use CEGUI (with tons of errors) all to simply ...
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23 views

Inverse kinematic joint limits

I want to limit the joint angle of my character. I have just one issue i can't get the value of the joint limits of the human -i search about max, min angle of each joint in x and y but i can't get ...
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27 views

Is it possible to have a SoA Vertex Buffer in DirectX 11?

Hi! I'm wondering if it is possible to structure a Vertex Buffer in a SoA approach like this { x1, x2, x3 . . . xn, y1, y2, y3 . . . yn, z1, z2, z3 . . . zn } instead of the traditional AoS ...
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236 views

Unreal Engine 4 Line Trace Error

This is the error that I am currently facing: PlayerPawn.cpp.obj : error LNK2019: unresolved external symbol "public: bool __cdecl APlayerPawn::Trace(struct FHitResult,class AActor *,struct FVector ...
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714 views

How to build a static version of cocos2d-x and link it to my project

Firstly, I'm using Cocos2d-x v3.6 for Win32 desktop + Visual studio 2013 and C++. When building Cocos2d-x, always it has been built as a dynamic version not a static version as I want. How to ...
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283 views

OpenGL Texture Loading

I've been using OpenGL for a bit so I have a general idea of what I'm doing. Recently, I've been working on a framework to let me test stuff more easily. As part of the framework, I split up loading ...
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71 views

Find camera coordinate of vanishing point

Given a vector and a camera (position, angle, up vector, field of view, etc), how would I find the vanishing point of the vector in camera space?
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188 views

Directx 11 full screen

I build simple directx 11 application in c++ that draw square to screen. Also check in the end of the program when I close the last peace of directx the number of free reference. This work great in ...
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124 views

server/client architecture, how to combine physics data, scene graph and database over the network?

I'm writting a C++ server and a C++ client for a rpg game. The client is using OpenSceneGraph for rendering the 3D. RakNet is used for communication between the client and server. At this time, the ...
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120 views

Python interpreter as in-game console

Say I have a game which has lots objects (NPCs, monsters, etc.), I want a console so I can change the variables of the objects (like changing HP for example), how could I embed python into my program, ...
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23 views

Full-motion transparentized video clips

This is sort of a question following onto a previous question I wrote specifically targeting XNA. Understanding that it's an involved enough process that I'd want to manage memory myself, I'm now ...
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183 views

glGetUniformLocation returns 23724032

as the title says, I have a problem using glGetUniformLocation call that returns, for the following code, the value 23724032. I'm writing a little engine and the draw function of my models is: void ...
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1k views

Setting up local players in Unreal Engine

I'm trying to make a 4 player 2D local multiplayer game. I have tried a lot of stuff to get to this stage, but as far as I have been told, a method called CreateLocalPlayer creates a local player, ...
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291 views

C++ - SFML - OpenGL - GLSL - smooth waving texture

I have this shaders: Fragment: uniform float time; uniform sampler2D texture; void main() { float t = time; vec2 aux = gl_TexCoord[0].xy; // This would also make waving/deform the ...
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149 views

DirectX Rendering to a texture

I'm trying to implement a rendering to a texture but without success. I've created a class that will(should) take care about all these stuff: class TextureRenderer { public: TextureRenderer() = ...
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248 views

Playing Multiple Sound effects isssue in cocos2d-x

Please help if someone faced this issue. I have a sound effect 3sec long which need to be played repeatedly for some time of 10 to 15 secs. Implemented like below: SimpleAudioEngine::sharedEngine()-&...
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136 views

Blending Lightmaps and Dynamic Texture Shadows in HLSL/GLSL

I'm using Gile[s] as my lightmapper and my engine can execute GLSL/HLSL scripts. I would like to accomplish something like this for performance reasons. I was told that this technique can only be ...
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337 views

How to properly transform vertices for a model loaded using Assimp?

When I try to load a DAE model then vertices are not placed correctly. Here's the code snippet I use to load 3D models using Assimp : aiNode* CGameObject::findNode(aiNode* rootNode, const char *name)...
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99 views

Particle System Tracking

I have a particle system where instead of tracking the time each particle is alive, I just track the time of the oldest particle and the time of the youngest particle. Basically, the oldest particle ...
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438 views

2D Rotation Transform Matrix Issues

I'm stuck on my computer graphics class homework. I'm sorry if this is not right place to ask. I think this is closest thing to computer graphics. My assignment is to create basic 2D colored ...
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507 views

Assimp - Error loading .obj files

I'm trying to load .obj files in my little game. I decided to use assimp as tool to import those models. But it seems that assimp does not import them correctly. I looked for a simple cube mesh ...
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270 views

OpenGL - Texture disappears

I'm making a simple program with C++, SDL and GLEW. So far it is going great but I ran into a weird problem. One of my four textures would not show up on screen even though it used the same code as ...
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270 views

Problem when using two different shaders

I have created a simple shader for drawing my scene in OpenGL. When another shader was introduced, a problem appeared. I use the first shader and draw few objects in the scene. Then I use the second ...
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774 views

Get derived Pawn from collision actor in UE4

I am trying to build a basic RTS unit selection but any time I try to possess the target pawn it crashes. The pawn in the collision is a blueprint derived directly from APawn. Am I casting from the ...
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90 views

Tile Collision - subtracting a minor value to the box size

I'm having a certain problem when doing collision checks on bounding boxes that have their edges aligned with upper or right tiles. It shouldn't count as an intersection but I don't know a good ...
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0answers
79 views

How to Calculate K-Dops Faster

Ok so I have my general understanding of K-Dops for collision detection. I understand how to calculate them. I also understand the super slow way of recalculating them. Example: I have a simple ...
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0answers
511 views

FBX SDK Colors problem

I've imported control points, normals, and indices successfully and now i'm trying to import vertex colors, but something is not right. Here's the code: FbxLayerElementMaterial* ...
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247 views

Libnoise producing completely random noise

I am using libnoise in C++ taken and I have some problems with getting coherent noise. I mean, the noise produced now are completely random and it doesn't look like a noise. Here's a to the image ...
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62 views

Bullet Physics ConvexDecomposition?

I've looked at Bullet Physics ConvexComposition Demo and would like to implement that in my game but the code is so undescriptive and it's hard to understand what is going on. Would any of you people ...
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285 views

AddFontMemResourceEx and D3DXCreateFont corruption

I'm trying to load a font from a buffer using AddFontMemResourceEx and then creating a D3D font with D3DXCreateFont. This works fine on every platform except Windows XP, where it causes the wrong ...
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266 views

Different way to pass uniforms to seperate draws in glMultiDrawElementsIndirect

Given OpenGL version 4.3 and GLSL 430, what would be the best way to pass a matrix to each model in a draw call to glMultiDrawElementsIndirect? I am thinking of going the way of a TBO and indexing it ...